Use the common roles throught this role to remove all of the boilerplate
code we had. The common modules do most of the heavy lifing.
Update to fix the resolve.conf issue with the image cache prep.
Add legacy image support and use smaller upstream images by default.
Now that suse supports systemd-networkd we can enable suse support in
nspawn.
Change-Id: I5f6ceb928f5c0902adf2e34f96a5998840400777
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>
Dmitriy Rabotyagov